b'THE OFFICIAL NFBA MAGAZINEENERGY CODE COMPLIANCE FOR POST-FRAME BUILDINGSRESEARCH & TECHNOLOGYResidential Energy Code Map image above taken from energycodes.gov/state-portalByAaron Halberg, PEHalberg Engineering, LLCT he International Energy Conservation Codeconcepts and considerations are similar (IECC) (published by the International Codein the residential provisions.Council, Inc.; see Figure 1) is a model buildingThe primary focus for building envelope code commonly adopted by states and municipalitiescompliance is demonstrating that there is in the United States. It contains efficiency requirementsadequate insulation in the building shell for energy systems within a building, including heating,to create energy efficient heating and cooling based on ventilation and air conditioning; service water heating;the buildings climate zone. The building envelope (see electrical power; lighting; and the building envelope. ToFigure 2) is defined by the limits of the conditioned space determine which energy code is adopted in a particularseparated from unconditioned space or the outdoors. state, see www.energycodes.gov/state-portal and noticeThe 2021 IECC requires commercial buildings to comply that there is a portal at this site for both Residentialwith one of these three options, chosen by the building and Commercial codes. While there, you can also findowner and the owners designer (see C401.2): various code compliance tools under the Tools & Modeling menu, including the popular COMcheck1.IECC Prescriptive Compliance (C402 - C406) (Commercial)andREScheck(Residential)tools. 2.IECC Total Building Performance method (C407)One important part of the 2021 edition of the IECC for post-frame builders is the building envelope requirements.3.ANSI/ASHRAE/IESNA 90.1-2019The IECC contains provisions for commercial (IECC C402) and residential (IECC R402) buildings.Thiscontinued on page: 21article focuses on the commercial provisions, though the 20 / FRAME BUILDER - VOL5 5'